I Feel Like Wegovy Stopped Working — Here's What Might Be Going On

Semaglutide works by activating GLP-1 receptors involved in appetite regulation, promoting feelings of fullness and reducing how much food feels appealing. When you first start or increase your dose, these effects can feel quite pronounced. Over time, a few things may contribute to the sense that the medicine is less potent:

• Physiological adaptation: The body adapts to many medicines over time. Some people find that the appetite-suppressing effect becomes less noticeable after several months at a stable dose — sometimes called a plateau effect. This is a well-recognised pattern and not unique to Wegovy.
• Changes in behaviour: Early in treatment, the reduction in appetite often naturally cuts calorie intake. As appetite partially returns, previous eating habits can quietly drift back, which can stall progress without any change in the medicine itself.
• Dose stage: Wegovy is titrated — started at a low dose and increased gradually by the prescriber. If you feel the effect has lessened, it may relate to where you currently are in that titration schedule. Any decision about dose is your prescriber's to make, based on your full medical picture.
• Unrelated factors: Sleep, stress, physical activity levels, and other health changes all influence weight and appetite independently of the medicine.

It is worth knowing that a slower rate of weight loss is not the same as the medicine having stopped working entirely. Progress on GLP-1 medicines is rarely a straight line, and plateaus are a normal part of many people's journeys — something explored in more detail on the page about what happens when weight loss stalls on a GLP-1 medicine and the related discussion of why a GLP-1 might not seem to be working.

For a broader look at how semaglutide and tirzepatide act on the body's appetite pathways, see the guide to how GLP-1 medicines work.

If something feels different, the most useful thing you can do is build a clear picture of what has actually changed — and that's exactly where GLP Trackr's insights and analytics can help. Rather than relying on memory when you speak to your prescriber, the app lets you track patterns over time: weight trends, energy levels, food-noise scores from your daily check-in, and how these shift week by week. That data can make the conversation with your prescriber far more specific and productive.

Alongside weight tracking, logging food and protein intake through the app's AI photo scan or barcode search can reveal whether calorie intake has gradually increased — a common and easy-to-miss contributor to a plateau that has nothing to do with the medicine losing potency.

A few things worth tracking and reflecting on before your next appointment:

• When exactly the change in appetite or weight loss felt noticeable — was it after a dose change, a period of stress, or a shift in routine?
• Whether food intake or eating patterns have shifted, even subtly
• Sleep quality and stress levels, both of which independently influence appetite and weight
• Any new or returning side effects

GLP Trackr's doctor report feature can pull together a summary of your logged data — doses, weight, mood, and side effects — in a format that's easy to bring to a clinical appointment. It's a practical way to turn weeks of tracking into something genuinely useful for your prescriber.

Always follow the guidance of your prescriber or doctor — they know your full history and are best placed to advise on whether anything about your treatment needs to change. If you are experiencing any symptoms that feel new or concerning alongside this, contact your healthcare professional promptly rather than waiting for a routine appointment.

Want to see what your own patterns actually look like? GLP Trackr is free to try for 7 days — download it on the App Store or Google Play and start building the picture today.